Question

A road roller has a roller on the front that is filled with water to make it heavy. The tank of water in the roller has a radius of $5$ m and a length of $12$ m. Find the volume of water in the roller.

• A. $392.5$ $c{m}^3$
• B. $392.5$ $m{m}^3$
• C. $292.5$ $m^3$
• D. $392.5$ $m^3$

Answer 1

The correct option is D $392.5$ $m^3$

Volume of water $=$ Volume of roller $=$ ${\pi r}^{2}h=\frac{22}{7}\times 5\times 5\times 12$

$=$ $\frac{6600}{7}=942.86m^3$